Pmeumonia is a secondary result of infection by a virus (flu, in this case) or a bacteria, and can also be caused by damage from smoke or caustic substances. The lungs fill up with fluid, basically, and you die because you can’t breathe.
She had gotten the flu, in this case, and it was the cause of the pneumonia, so she actually died of the flu.
I’m not big on shots, but I did get a flu shot this year because it’s supposed to be a bad year for the flu. There are two vaccines this year: one protects against three strains, and the other protects against four strains. And then again, the flu that really hits may not be any of these strains.
However, a flu shot betters your odds - and you can usually get a flu shot for free or very little at your local CVS or even the Publix pharmacy, so it’s not a big effort to get that extra protection.
Makes a person wonder, doesn't it?